OCR A GCSE Chemistry Paper 3 Higher Tier (J248 03) - 22nd May 2023 [Exam Chat]

How was the Paper ?
Does anyone remember any answers for calculations

Reply 2

Student16061

10

7.2g is the only one I remember? What did u get?

Reply 3

abizz

Original post by Student16061

7.2g is the only one I remember? What did u get?

yeah i got that then there was another question with avagardos constant and 0.45 moles i think you had to divide

Reply 4

for the avogrados constant one i did 0.9 (moles of NO2 or whatever) x avogrados constant but thats the calculation for number of atoms so its probably wrong

Reply 5

what did you guys do for the sand salt and water

Reply 6

Student16061

10

Original post by nyxonline

for the avogrados constant one i did 0.9 (moles of NO2 or whatever) x avogrados constant but thats the calculation for number of atoms so its probably wrong

I did the same thing but idk if it’s right

Reply 7

Ujaval

was expecting it to be difficult but it actually went semi good (reckon I can get a 6/7)

(edited 11 months ago)

Reply 8

abizz

Original post by nyxonline

what did you guys do for the sand salt and water

I put distillation but my grade 9 friend told me you had to put filitration then distillation

Reply 9

Ujaval

i swear the polymer and crosslinks are part of paper 2

Reply 10

Ujaval

Original post by abizz

I put distillation but my grade 9 friend told me you had to put filitration then distillation

distillation is for separating multiple liquids while filtration is separating an insoluble solid (hasn't dissolved) from a liquid. also im pretty sure u had to talk about how to test if its pure afterwards (u boil it and if the boiling point is exactly the same its pure)

(edited 11 months ago)

Reply 11

Original post by Student16061

I did the same thing but idk if it’s right

thank god bc it’s the only thing i could think of😭😭

Reply 12

choerryooh

Original post by Student16061

7.2g is the only one I remember? What did u get?

oh no i put 14.4 instead because i forgot to divide by 2 nooooo :s-smilie:

Reply 13

choerryooh

Original post by Ujaval

i swear the polymer and crosslinks are part of paper 2

me when i saw the word hexane in the multiple choice questions i was sooo.... :confused:

Reply 14

Manutdfan221

2

what did you get for the avogadros constant 3 marker?

Reply 15

Original post by Manutdfan221

what did you get for the avogadros constant 3 marker?

i did 0.9 mol x avogrados constant so i got 5.42 x 10^23 but dk if that’s right

Congratulations everyone :smile:

Reply 17

what did u all include in your 6 markers

Reply 18

Okiiiip

Original post by nyxonline

i did 0.9 mol x avogrados constant so i got 5.42 x 10^23 but dk if that’s right

Same it’s right

Reply 19

Okiiiip